Grouping JRadioButton Components in a ButtonGroup : JRadioButton « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JRadioButton

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;

import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.Border;

class RadioButtonUtils {
  public static Container createRadioButtonGrouping(String elements[], String title) {
    JPanel panel = new JPanel(new GridLayout(0, 1));

    if (title != null) {
      Border border = BorderFactory.createTitledBorder(title);
      panel.setBorder(border);
    }

    ButtonGroup group = new ButtonGroup();
    JRadioButton aRadioButton;

    for (int i = 0, n = elements.length; i < n; i++) {
      aRadioButton = new JRadioButton(elements[i]);
      panel.add(aRadioButton);
      group.add(aRadioButton);
    }
    return panel;
  }
}

public class GroupJRadioButton {
  private static final String sliceOptions[] = { "4", "8", "12", "16" };

  private static final String crustOptions[] = { "A", "B", "C", "D" };

  public static void main(String args[]) {

    JFrame frame = new JFrame("Grouping Example");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    Container sliceContainer = RadioButtonUtils.createRadioButtonGrouping(sliceOptions,
        "Slice Count");
    Container crustContainer = RadioButtonUtils.createRadioButtonGrouping(crustOptions,
        "Crust Type");
    frame.add(sliceContainer, BorderLayout.WEST);
    frame.add(crustContainer, BorderLayout.EAST);
    frame.setSize(300, 200);
    frame.setVisible(true);
  }
}

14.9.JRadioButton
	14.9.1.	Creating JRadioButton Components
	14.9.2.	Using JRadioButton
	14.9.3.	Grouping JRadioButton Components in a ButtonGroup
	14.9.4.	Determining the Selected JRadioButton in a Button Group
	14.9.5.	Listening to JRadioButton Events with an ActionListener
	14.9.6.	Reference to the last selected item and check for reselection
	14.9.7.	Listening to JRadioButton Events with a ChangeListener
	14.9.8.	Listening to JRadioButton Events with an ItemListener
	14.9.9.	Event sequence: Action Event, Item Event and Change Event
	14.9.10.	Getting selected JRadioButton in a container
	14.9.11.	Customizing JRadioButton Look and Feel